Sole-rounding machine.



Gr- JULIAN.

SOLE ROUNDING MACHINE. APPLICATION FILED SEPT. 27, 1912.

1,092,996. Patented Apr. 14, 1914,

COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. c.

3 SHEETS-SHEET 1.

G. JULIAN.

SOLE ROUNDING MACHINE. APPLIGATION FILED SEPT. 27, 1912.

Patented Apr. 14, 1914.

3 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPII C0., wASmNc'roN. D c.

G. JULIAN.

SOLE ROUNDING MACHINE.

APPLICATION FILED SEPT. 27, 1912.7

1,092,996. Patented Apr. 14, 1914.

3 SHEETS-SHEET 3.

G-IDEON JULIAN, 011 BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF :PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-ROUN DING MACHINE.

Specification of Letters Patent.

Patented Apr. 14:, 1914.

Application filed September 27, 1912. Serial N 0. 722,581.

7 '0 all whom it may concern Be it known that I, GInEoN JULIAN, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sole'Rounding Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to machines used in the manufacture of boots and shoes for rounding a block sole, such machines being known generally as sole rounding machines, and more particularly to that type of sole rounding machines disclosed in Letters Patent of the United States No. 882,009, dated March 17, 1908, granted to United Shoe Machinery Company on an application of B. F. Mayo. In this class of machines the sole is clamped upon a stationary pattern and is rounded by a knife which preferably darts around the pattern as described in said patent. As the knife darts around the pattern the position of the knife relative to the pattern is automatically shifted to maintain the pull upon the knife substantially tangential to the curve of the pattern and the pressure of the knife on the pattern uniform. This knife shifting mechanism is adapted to operate satisfactorily with patterns varying considerably in size and shape. In order to maintain the pull upon the knife substantially tangential to the curve of any size or shape of pattern the machines of'the type disclosed in the pateut hereinbefore referred to are provided with devices for preliminarily adjusting the knife shifting mechanism in accordance with the particular size or shape of pattern inserted into the machine. Sometimes in substituting a large for a small pattern the opcrative forgets to make the necessary change in the adjustment for the knife shifting mechanism. When this happens the pull upon the knife during the sole rounding operation instead of being substantially tangential to the curve of the pattern is across the pattern. Consequently the pressure of the knife upon the pattern instead of being uniform throughout the sole rounding operation increases excessively as the knife reaches the toe and heel portions of the pattern. This excessive pressure causes either the knife carrying arm to break or the pattern carrying standards to snap off, thus interrupting the continued operation of the sole rounding machine.

The object of the present invention is to prevent the breakage of the machine and continue the transfer of the point of operat10n of the knife around the pattern when through a mistake in the preliminary adustment the pull upon the knife during the sole rounding operation is across the pattern instead of substantially tangential to the curve of the pattern.

To the accomplishment of this object one feature of the invention contemplates the provision, in a sole rounding machine provided with a pattern and a rounding knife relatively movable to transfer the point of operation of the knife around the sole carried by the pattern, means for preliminarily adj ustin the relative position of the pattern and knife, and means for maintaining the pull upon the knife during the sole rounding operation substantially tangential to the curve of the pattern, of means for automatically causing the knife to leave the pattern when through a mistake in the preliminary adjustment the pull on the knife is across the pattern.

Broadly considered, the knife may leave the pattern in any manner found desirable or expedient. It is preferred, however, to withdraw the knife from the pattern a sulficient distance to relieve the excessive pressure of the knife on the pattern so as to permit the continued transfer of the point of operation of the knife around the pattern. This manner of actuating the knife causes a bunch to be left on the rounded sole at the toe and heel portions thereof which serves as an indicating means to inform the operative that a mistake has been made in the preliminary adjustment of the knife and pattern.

In addition to the feature of the invention above referred to other features of the invention consist in certain devices, combinations and arrangements ofvparts as fully set forth hereinafter, the advantages of which will be readily understood by those skilled in the art.

The various features of the present invention will be readily understood from an inspection of the accompanying drawings illustrating the preferred embodiment of the invention, in which,

Figure 1 is a detail, in plan, of the machine illustrating the correct relative position of the pattern and the knife during the sole rounding operation; Fig. 2 is a detail in plan, illustrating an incorrect relative position of the pattern and knife during the sole rounding operation and the operation of the mechanism for preventing breakage under the excessive pressure caused by the incorrect position of the pattern and knife; and Figs. 3 and 4 are diagrams illustrating the correct and incorrect direction. of pull upon the knife.

In the illustrated embodiment of the invention a pattern 1 is held stationary in the machine by a pair of bolts 2, the heads of which are adjustably mounted in a slot 3 formed in the plate 4 carried by the upper end of a vertical cylindrical block 5 rigidly supported by the machine frame. The heads of the bolts 2 may be adjusted in the slot 3 1 toward and from each other so that the bolts may support difierent sizes of patterns.

Rotatably mounted on the machine frame with its axis of rotation coinciding wlth the longitudinal central line of the block 5 is a ally mounted on the support 6.

In order to move the rounding knife in a path corresponding approximately in shape to that of the pattern, means is provided for oscillating the guide 13 to cause it to stand normal to the curve of the pattern at all times and for sliding the carrier 12 inwardly and outwardly during the rotation of the support 6. To oscillate the guide 13 the support 6 carries a bent lever 14, one arm of which is provided with a roll engaging a cam groove 15 in a stationary cam 16 and the other arm of which is connected by means of a link 17to the guide 13. To slide the carrier 12 inwardly and outwardly during the rotation of the support 6 the plate 4 carries a cam 18, provided with a cam groove 19 which is engaged by a roll 20 mounted on the carrier 12. The movements imparted to the carrier 12 by the rotation of the support 6 and by the action of the cam grooves 15 and 19 are such that the rounding knife is caused to travel in a path approximately in shape to that of the pattern 1. In order to cause the knife to move in a path exactly corresponding to that of the pattern, the rounding knife is movably mounted on the carrier 12 and its shank is yieldingly held against the pattern. The

shank of the knife thus constitutes a guide cooperating with the pattern for'causing the knife to travel in a path corresponding exactly in shape to that of the pattern. As shown the plate 10 is provided with a segmental rack 21 which meshes with a pinion 22 secured to a short vertical shaft 23, the lower end of which is journaled in the carrier l2 and the upper end of which is journaled in a cover plate 24 secured to a casing 25 projecting upwardly from the carrier 12. A spiral spring 26 surrounds the shaft and is secured at one end to the shaft and at the other end to the casing 25, the tendency of the spring being to rotate the pinion 22 in a direction to move the rounding knife toward 7 the pattern. The upper end of the shaft 23 is provided with a lug 27 to which is pivoted a hand lever 28 by means of which the shaft 23 may be rotated against the tension of the spring 26 to move the rounding knife into and out of operating position. In order to hold the rounding knife withdrawn from the pattern the cover plate 25 is provided with a series of ratchet teeth 29, any one of which is arranged to engage the handle 28 when the latter is turned about its pivotal connec tion with the lug 27. p

In order to adapt the mechanism for operation with patterns varying widely in size I and shape, mechanism is provided having means for adjustment for moving the cam 18 during the operation of the machine whereby the extent of the inward and outward movements imparted to the carrier 12 may be varied and the mechanism for oscillating the carrier is provided with means for adjustment whereby the extent of the oscillating movements imparted to the carrier may also be varied. In order to allow the cam 18 to' be so moved it is mounted to slide in the direction of the longitudinal axis of the pattern upon. guideways formed on the plate 4. The cam 18 is moved on its guide ways during the rotation of the support 6 by means of an eccentric 30 which engages a strap extending downwardly from the cam. The eccentric 30 is secured to or formed integrally with a slide 31 mounted upon the support 6, the construction being such that the eccentricv 30 is rotated with the support. The eccentric 30 is provided with a slot 32, through which the block 5 extends, to permit the eccentric to be adjusted with relation to the center of the rotary support 6 and thus vary the extent of the movements imparted to the cam 18. The slide 31 is arranged toslide through a guide 33 upon the support 6 and is provided with a handle 34 by means of which it may be actuated to change the position of the eccentric 3.0. The eccentric and slide are held in adjusted position by means of a pin 35 pivotally. mounted on the handle 34 and arranged to engage any one of a series of holes 36 formedon the slide. The eccentric 30 can be so adjusted as not to move the cam 18 during the revolution of the support (3, or it may be adjusted so as to increase or diminish the extent of the outward movements imparted to the carrier 12. In order to adjust the extent of the oscillating movements imparted to the carrier 1:2, the arm of the lever 14 to which the link 17 is connected is provided with a longi tudinal slot- 37 in which the end of the link may be adjusted nearer to or farther from the pivot of the lever 14. The lever 14: and link 17 are held in adjusted position by means of a rotary clamp 38 which is provided with a circular head (not shown) arranged to engage any one of a series of circular recesses 39 formed in the lever. During the rotation of the support 6 the guide 13 is oscillated so as tostand substantially normal to the curve of the pattern at all times, this result being. due to the configuration of the cam groove 15 and the arrange ment of the connections between the cam groove and guide. The carrier 12 is also moved inwardly and outwardly by the cam groove 19, the resultant motion of the carrier due to the oscillating movements of the guide and the inward and outward movements of the carrier being such that the rounding knife is moved in a path corresponding approximately in shape to that of the pattern. The point of connection between the rounding knife and the carrier 12 is at 11, and it will be seen from an inspection of Figs. 1 and 3 that a line joining this point and the point on the pattern at which the knife is operating is also substantially tangential to the curve of the pattern, and consequently, the pull on the knife also in a direction substantially tangential to the curve of the pattern. a

All the parts just described may be, and preferably are, substantially the same as those illustrated in the Letters Patent hereinbefore referred to, to which reference may be had for a full disclosure of the construction and operation of the machine.

In the'use of machines of this class it is necessary for the operative after changing from one pattern to another of a different size or shape to adjust the position of the slide 31 on the support 6 and the position of the link 17 on the arm 1 1 to adapt the knife shifting mechanism to the new conditions and thus insure that the pull upon the knife will continue to be substantially tangential to the curve of the new pattern. Fig. 1 shows the position of the slide 31 and link 17 when adjusted for a large pattern and Fig. 2 shows the position of the same parts when adjusted for a small pattern. Sometimes when substituting a large pattern for a small one, the operative fails to make the necessary change in the position of the slide 31 and link 17, that is, bring them from the position of Fig. 2 into the position of Fig. 1. When this happens the pivot 11 occupies such a position that a line joining the pivot and the point on the pattern at which the knife is operating is across the pattern (as illustrated in Fig. 4) instead of substantially tangential to the curve of the pattern (as illustrated in Fig. 3). Heretofore when the operative failed to make the change in the position of the slide 31 and link 17, when changing from a small to a large pattern, the pressure of the knife upon the pattern became so great, as the knife reached the toe and heel portions of the pat tern, that either the knife carrying arm or the pattern carrying standards were broken, thus interrupting the continued operation of the machine. In order to prevent breakage of the machine in the event that the operative fails to adjust the knife shifting mechanism when changing from a small to a large pattern, the knife carrying arm 9 is provided with an upwardly extending cam lug or safety block 4.0 which is arranged, when the pull on the knife is across the pattern, or in a direction to cause breakage, to engage either the heel or toe portions of the pattern, as the case may be, and thus swing the knife away from the edge of the pattern, as shown in Fig. 2. From an illspection of this figure it will be apparent that as soon as the cam 40 clears the end of the pattern the knife will be returned against the edge of the pattern. Consequently, when the operative removes the sole from the pattern he will notice two bunches on the toe and heel portions of the sole which will indicate to him that he failed to make the necessary change in the adjust- .ments of the knife shifting mechanism. After making the necessary change in the adjustment the misshapen sole may be replaced upon the pattern and properly cut to shape.

It will be clear to those skilled in this class of machines and with the general objects of the present invention in view that changes may be made in the details of structure. the described and illustrated embodiment thereof being intended as an exploitation of its underlying essentials, the features whereof are definitely stated in their true scope in the claims hereto appended.

hat is claimed as new, is

1. A sole rounding machine, having, in combination, a pattern and a rounding knife relatively movable to transfer the point of operation of the knife around the sole carried by the pattern, means for preliminarily adjusting the relative position of the pattern and knife, means for maintaining the pull upon the knife during the sole rounding operation substantially tangential to the curve of the pattern when the knife and pattern have been correctly preliminarily adjusted, and means for automatically causing' the knife to leave the pattern when through an incorrect preliminary adjustment the pull on the knife is across the pattern, substantially as described.

A sole rounding machine, having, in combination, a pattern, a carrier, a rounding knife carried thereby, means for preliminarily adjusting the relative position of the pattern and knife and bringing the knife against the edge of the pattern, means for actuating the carrier to maintain the pull upon the knife substantially tangential to the curve of the pattern when the knife and pattern have been correctly preliminarily adjusted, and means for automatically withdrawing the knife from the edge of the pattern when through an incorrect preliminary adjustment the pull on the knife is across the pattern, substantially as described.

3. A. sole rounding machine, having, in combination, a pattern, a carrier, a rounding knife carried thereby, means for preliminarily adjusting the relative position of the pattern and knife and bringing the knife against the edge of the pattern, means for actuating the carrier to maintain the thrust of the knife substantially tangential to the curve of the pattern when the knife and pattern have been correctly preliminarily adjusted, and a cam cooperating with the pattern for automati'ally withdrawing the knife from the edge of the pattern when through an incorrect preliminary adjustment the pull on the knife is across the pat.- tern, substantially as described.

-1t. A sole rounding machine, having, in combination, a pattern, a rounding knife, means for adjusting the relative position of the knife and pattern in accordance with the size of the pattern, and means for indicating to the operative an incorrect relative adjustment of the knife and pattern, substantially as described.

A sole rounding machine, having, in combination. a pattern, a rounding knife, means peri'nitting the manual manipulation of the knife to advance and withdraw the knife transversely of the pattern, into and out of operating position, and additional means operating automaticallyduring the sole rounding operation for withdrawing the knife transversely of the pattern from correct preliminary adjustment the pull on the knife is across the pattern, substantially as described.

T. A sole rounding machine, having, in combination a pattern and a rounding knife relatively movable to transfer the point of operation of the knife around the sole carried by the pattern, a spring for yieldingly holding the knife to the pattern, meansfor preliminarily adjusting the relative position of the pattern and knife to insure uniform pressure between the knife and pattern throughout the sole rounding operation, and means cooperating with the pattern and acting through said spring-for relieving the pressure between the knife and pattern when through an incorrect preliminary adjust-ment such pressureis excessive, substantially as described.

8. A sole rounding machine, having, in combination, a pattern and a rounding knife relatively movable to transfer the point of operation of the knife around the sole carried by the pattern, a knife arm arranged in a plane below the plane of the pattern, and a safety block on said arm extending upwardly into the plane of the pattern as and for the purpose specified.

9. A sole rounding machine, having, in,

combination, a. pattern and a rounding knife relatively movable to transfer the point of operation of the knife around the sole carried by the pattern, the knife arm 9, and the cam lug CO on the upper side of said arm as and for the purpose specified.

GIDEON JULIAN.

Witnesses:

CHESTER E. ROGERS, Lanna M. GooDRIDoE.

G'oples of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 1 

